English is one of the world's most important languages ___
问题描述:
English is one of the world's most important languages ___
a.as it is so widely used b.if it is used very wide
c.it is used until so widely d.for it is quite wide used
为什么选A?还有就是形容词,副词句中的用法在此句中
答
这里的as是表原因,还Because一样.
it is used 表被动.被使用,widely副词修饰动作.